1. Random
error
Systematic
error

3. 58.3
0.234

4. 58.3
0.234
In experimental data, the first uncertain figure is the last significant figure.

5. significant figure: The number of significant digits in a quantity is the minimum number of digits needed to express the quantity in scientific notation..

6. Adding and subtracting with sig figs:
Keep least sig figs beyond the decimal point

7. Adding and subtracting with sig figs:
Keep least sig figs beyond the decimal point
WATCH OUT:
SAME POWERS OF 10!

8. Multiplying and dividing with sig figs:
Keep least sig figs.